Wands are great... for non-offensive spells. The DC for offensive spells is set to the minimum to be able to cast the spell, and nothing in 3e will raise that.
So a wand of Fireballs has a DC of 14 (10 + Spell level (+3)+ Minimum Intelligence (13) mod (+1))... not very impressive, especially at high level.
The answer of course is to build offensive wands that don't allow saves: Enervation, Summon Monster IV, Evard's Black Tentacles all spring to mind.
IMO, Craft Wands is necessary for the well-rounded Wizard.
Forge Ring is cool too. The ability at high levels to stack several of those powerful abilities into one ring slot is not to be dismissed lightly. Especially as you are apparently starting out high level (Archmage/Harper mage)
In order to create the metamagic rods, you need access to the metamagic feat, making them less interesting to start with.